Product Market Competition and Agency Conflicts: Evidence from the Sarbanes Oxley Act

Posted: 19 Mar 2008 Last revised: 23 Nov 2015

See all articles by Vidhi Chhaochharia

Vidhi Chhaochharia

University of Miami - Department of Finance

Gustavo Grullon

Rice University - Jesse H. Jones Graduate School of Business

Yaniv Grinstein

Cornell University - Samuel Curtis Johnson Graduate School of Management; Interdisciplinary Center (IDC) Herzliyah; European Corporate Governance Institute (ECGI)

Roni Michaely

The University of Hong Kong; ECGI

Date Written: July 2012

Abstract

We use the Sarbanes Oxley Act (SOX) as a natural experiment of a shock to internal governance to examine the link between product market competition and internal governance mechanisms. Consistent with the notion that product market competition is a close substitute for internal governance, we find that firms in concentrated industries experienced a larger improvement in operational efficiency after the approval of SOX than did firms in non-concentrated industries. These gains in efficiency appear to come from a significant reduction in production and administrative costs. Several robustness tests confirm that our main results are not driven by unobservable factors unrelated to changes in corporate governance.

Suggested Citation

Chhaochharia, Vidhi and Grullon, Gustavo and Grinstein, Yaniv and Grinstein, Yaniv and Michaely, Roni, Product Market Competition and Agency Conflicts: Evidence from the Sarbanes Oxley Act (July 2012). Available at SSRN: https://ssrn.com/abstract=1109225 or http://dx.doi.org/10.2139/ssrn.1109225

Vidhi Chhaochharia

University of Miami - Department of Finance ( email )

P.O. Box 248094
Coral Gables, FL 33124-6552
United States

Gustavo Grullon

Rice University - Jesse H. Jones Graduate School of Business ( email )

P.O. Box 2932
Houston, TX 77252-2932
United States
(713) 348-6138 (Phone)
(713) 348-6331 (Fax)

HOME PAGE: http://www.ruf.rice.edu/~grullon/

Yaniv Grinstein (Contact Author)

Cornell University - Samuel Curtis Johnson Graduate School of Management ( email )

Sage Hall
Ithaca, NY 14853
United States
607-255-8686 (Phone)
607-254-4590 (Fax)

Interdisciplinary Center (IDC) Herzliyah ( email )

P.O. Box 167
Herzliya, 46150
Israel

European Corporate Governance Institute (ECGI)

c/o ECARES ULB CP 114
B-1050 Brussels
Belgium

Roni Michaely

The University of Hong Kong ( email )

Pokfulam Road
Hong Kong, Pokfulam HK
China

ECGI ( email )

c/o the Royal Academies of Belgium
Rue Ducale 1 Hertogsstraat
1000 Brussels
Belgium

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